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प्रश्न
Simplify: `10 – {4"a" – (7 – bar ("a" - 5) - (5"a" - bar(1 + "a")))`
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उत्तर
`10 – {4"a" – (7 – bar ("a" - 5) - (5"a" - bar(1 + "a")))`
= 10 – {4a – (7 – a + 5) – (5a – 1 – a)}
= 10- {4a -(12 - a) -(4a - 1)}
= 10 – {4a – 12 + a- 4a + 1}
= 10 – 4a + 12 – a + 4a - 1
= 10 + 12 – 1 – 4a – a + 4a
= 21 - a
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